Pro Series Valve Springs
Pro Series Valve Springs
Designed to handle the demands of extreme-lift camshafts operating at prolonged, high-rpm use at championship-level racing, Skunk2’s Pro Series Valve Springs for Honda’s K-series engines are simply the best. Each Pro Series Valve Spring line has been tested at speeds as high as 11,000 rpm on both the engine dyno and the street. Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. During development, each valvetrain component is tested both on the dyno and the road. Manufactured from the best materials available, Skunk2 valvetrain components provide exceptional performance, reliability, and quality and remain standard-issue on each Skunk2 vehicle that we build and support.
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Acura
Part No. Engine Note Price
311-05-5350 B17A1
Seat Pressure: 60 lbs at 1.320”
Open Pressure: 210 lbs at 0.820”
Coil Bind: 0.720”
Also compatible with H-series VTEC engines when used with H-Series Spring Base Kit, available separately.
$332.84 Buy Now
311-05-5350 B18C1, C5
$332.84 Buy Now
311-05-5380 K20A2, A3, Z1
Engines originally equipped with single valve springs must use K-Series Spring Base Kit, available separately.
Seat Pressure: 70 lbs at 1.600”
Open Pressure: 230 lbs at 1.100”
Coil Bind: 0.870”
$332.84 Buy Now
311-05-5380 K24A2
$332.84 Buy Now
Honda
Part No. Engine Note Price
311-05-5350 B16A2, A3
Seat Pressure: 60 lbs at 1.320”
Open Pressure: 210 lbs at 0.820”
Coil Bind: 0.720”
Also compatible with H-series VTEC engines when used with H-Series Spring Base Kit, available separately.
$332.84 Buy Now
311-05-5410 F20C1
Seat Pressure: 70 lbs at 1.600”
Open Pressure: 230 lbs at 1.100”
Coil Bind: 0.870”
$332.84 Buy Now
311-05-5410 F22C1
$332.84 Buy Now
311-05-5380 K20A3, Z3
Engines originally equipped with single valve springs must use K-Series Spring Base Kit, available separately.
Seat Pressure: 70 lbs at 1.600”
Open Pressure: 230 lbs at 1.100”
Coil Bind: 0.870”
$332.84 Buy Now
311-05-5380 K24A1, A4, A8, Z1
$332.84 Buy Now
Acura
Part No. Model Year Trim Note Price
311-05-5350 Integra 1992 - 2001 GS-R
Seat Pressure: 60 lbs at 1.320”
Open Pressure: 210 lbs at 0.820”
Coil Bind: 0.720”
Also compatible with H-series VTEC engines when used with H-Series Spring Base Kit, available separately.
$332.84 Buy Now
311-05-5350 Integra 1997 - 2001 Type R
$332.84 Buy Now
311-05-5380 RSX 2002 - 2006 Base, Type-S
Engines originally equipped with single valve springs must use K-Series Spring Base Kit, available separately.
Seat Pressure: 70 lbs at 1.600”
Open Pressure: 230 lbs at 1.100”
Coil Bind: 0.870”
$332.84 Buy Now
311-05-5380 TSX 2004 - 2008 Base
$332.84 Buy Now
Honda
Part No. Model Year Trim Note Price
311-05-5350 Civic Coupe 1999 - 2000 Si
Seat Pressure: 60 lbs at 1.320”
Open Pressure: 210 lbs at 0.820”
Coil Bind: 0.720”
Also compatible with H-series VTEC engines when used with H-Series Spring Base Kit, available separately.
$332.84 Buy Now
311-05-5350 del Sol 1994 - 1997 VTEC
$332.84 Buy Now
311-05-5380 Civic Coupe 2006 - 2010 Si
Engines originally equipped with single valve springs must use K-Series Spring Base Kit, available separately.
Seat Pressure: 70 lbs at 1.600”
Open Pressure: 230 lbs at 1.100”
Coil Bind: 0.870”
$332.84 Buy Now
311-05-5380 Civic Hatchback 2002 - 2005 Si
$332.84 Buy Now
311-05-5380 Civic Sedan 2007 - 2010 Si
$332.84 Buy Now
311-05-5380 Element 2003 - 2008 2WD EX, 4WD EX
$332.84 Buy Now
311-05-5380 Element 2004 - 2008 2WD LX, 4WD LX
$332.84 Buy Now
311-05-5380 Element 2003 - 2004 2WD DX, 4WD DX
$332.84 Buy Now
311-05-5410 S2000 2000 - 2009 Base
Seat Pressure: 70 lbs at 1.600”
Open Pressure: 230 lbs at 1.100”
Coil Bind: 0.870”
$332.84 Buy Now
311-05-5410 S2000 2008 - 2009 CR
$332.84 Buy Now
Technology - Product Design and R&D

Since 1994, Skunk2’s led the industry with cutting-edge designs, technology, and race-proven products. Our extensive R&D facilities allow us to produce the highest quality, best performing parts for your vehicle. Each Skunk2 product is designed with advanced 3D modeling software by Skunk2 engineers at our Southern California headquarters. Leading-edge processes like Computational Fluid Dynamics and Finite Element Analysis ensure maximum performance and durability. Rapid prototyping allows us to quickly produce test versions of various products for further analysis. Prototypes are then tested using state-of-the-art dyno equipment and then proven on the race track. Finally, multi-axis CNC processes and precision welding are employed to produce the finest parts possible.

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Technology - Our Racing Heritage

As part of Skunk2’s commitment to developing the best parts possible, we’ve remained actively involved in various forms of motorsports through technical partnerships, sponsorships, as well as with our own race vehicles for more than 15 years. Since 1994, Skunk2’s continued to secure a number of drag racing and road racing records and championships, including the title of the world’s first 10-second naturally aspirated Honda. Racing provides us with the data necessary to produce high-performance parts that utilize innovative designs, advanced materials, and cutting-edge manufacturing methods. Today we continue our tradition of creating leading-edge products and subjecting them to rigorous tests, both on the track and the street.

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